While H2O2 is a powerful oxidant, decomposing into environmentally benign H2O and O2, a catalyst is often required for reactions with H2O2 to proceed at synthetically useful rates. Organotellurium and organoselenium compounds catalyze the oxidation of halide salts to hypohalous acids using H2O2. When sequestered into xerogel monoliths, the xerogel-chalcogenide combinations have demonstrated increased catalytic activity relative to the organochalcogen compound alone in solution for the oxidation of halide salts to hypohalous acids with H2O2. Diorganotellurides, diorganoselenides, and diorganodiselenides bearing triethoxysilane functionalities were sequestered into xerogel monoliths and their catalytic activity and longevity were investigated. The longevity of the catalyst-xerogel combinations was examined by isolating and recycling the catalyst-xerogel combination.  It was found tellurium-containing catalyst 3 and selenium-containing catalyst 8 maintained their catalytic activity through three recycling trials and adding electron-donating substituents to catalyst 3 also increased the catalytic rate. The presence of organotellurium and organoselenium groups in the +4 oxidation state was determined by X-ray photoelectron spectroscopy.
                                    虽然 
H2O2 是一种强力氧化剂,可以分解成对环境无害的 
H2O 和 O2,但与      的反应通常需要催化剂才能以对合成有用的速率进行。有机
碲和有机
硒化合物可利用      催化卤化物盐氧化成次卤酸。在溶液中用      将卤化盐氧化成次卤酸的过程中,与单独的
有机钙化合物相比,封存在异凝胶整体中的异凝胶-
钙原化合物组合具有更高的催化活性。研究人员将具有三乙氧基
硅烷官能团的二甘基四
碲化物、二甘基
硒化物和二甘基二
硒化物封存在异凝胶单体中,并对它们的催化活性和寿命进行了研究。通过分离和回收催化剂与 xerogel 组合,考察了催化剂与 xerogel 组合的寿命。  结果发现,含
碲催化剂 3 和含
硒催化剂 8 经过三次循环试验后仍能保持催化活性,而且在催化剂 3 中添加电子供体还能提高催化率。通过 X 射线光电子能谱测定了 +4 氧化态有机
碲和有机
硒基团的存在。